Marina Walker Guevara

Deputy Director   International Consortium of Investigative Journalists

Marina Walker Guevara is ICIJ’s deputy director. A native of Argentina, she has reported from a half-dozen countries and her investigations have won and shared more than 12 national and international awards. Over a ten-year career, she has written about environmental degradation in Latin America by multinational corporations; shadowy U.S. government HIV/AIDS prevention programs in Africa, and the cigarette mafia in the Tri-Border Area of South America, among other topics. In March 2006 she was awarded the European Commission Lorenzo Natali Prize (Latin America and the Caribbean region) for her reporting about environmental damage caused in Peru by a U.S.-based mining company; that investigation also won her the 2006 Reuters-IUCN Media Award for Excellence in Environmental Reporting. She graduated magna cum laude from Universidad Nacional de Cuyo in Mendoza, Argentina, with a bachelor’s degree in communication sciences, and earned a master’s degree in journalism from the University of Missouri.

ICIJ releases database revealing thousands of secret offshore companies

By Marina Walker Guevara

Luxembourg tax deals for Disney, Koch brothers empires revealed

Brand-name companies' secret Luxembourg tax deals revealed

Authorities block online access to ICIJ's exposé of Chinese elite's offshore holdings

ICIJ offshore records reveal tax haven clients in China, Hong Kong

Governments agree to share tax records

By Gerard Ryle and Marina Walker Guevara

ICIJ releases offshore leaks database revealing names behind secret companies, trusts

By Marina Walker Guevara

Tax authorities move on leaked offshore documents

By Gerard Ryle and Marina Walker Guevara

Caribbean go-between provided shelter for far-away frauds

Inside the global offshore money maze

New BBC documentary spotlights ICIJ probe into fish devastation

By Marina Walker Guevara

Dutch Parliament debates ICIJ’s Pacific overfishing investigation

By Marina Walker Guevara

Fishing nations approve overhaul of bluefin tuna tracking system

By Kate Willson and Marina Walker Guevara

Modest progress expected at climate talks in Cancun

By Marina Walker Guevara

Overview: The black market in bluefin

Part III: Bluefin, Inc.

By Marina Walker Guevara and Martin Foster

India: An out of control asbestos market

By Marina Walker Guevara

Investigative journalists gather in Brazil

By Marina Walker Guevara

Pius Njawe: Loss of a journalism giant

By Marina Walker Guevara

Top Swiss organized crime case ends, only two convicted

By Marina Walker Guevara

Smuggling made easy

El gran ‘duty free’

When cracking down seems impossible

By Marina Walker Guevara and Mabel Rehnfeldt

Wal-Mart’s mysterious missing exit signs: A tritium health risk?

By Marina Walker Guevara

Big tobacco’s New York black market

By Marina Walker Guevara and Kate Willson

Europe's future mafia states

By Marina Walker Guevara


By Marina Walker Guevara

Congress moves to curb abuses by advisory councils

By Jim Morris and Marina Walker Guevara

A science panel's curious end

By Marina Walker Guevara

Sustaining an unpopular regime

By Marina Walker Guevara